Originally Posted by
rankourabu
Convention goes your ticket will be cancelled.
I ve done it (TG-NH), since the carriers don't communicate, and/or just cancel their own metal segments, but wouldnt recommend it unless you are willing to accept the consequences, there will be no winning this argument.
Without baggage it may go unnoticed if you check in online. With checked bags, zero chance.
I have no baggage. Will it be possible do you think for me to call SQ and ask them to drop the first SIN-CGK flight? or call AE possibly to do so?